Scoring wheel



March 18 1930. c. s. LENs'roN SCORING WHEEL Filed sept. 1e. 1927Patented Mar. 18, 1930 UNITED STATES `PATENT OFFICE CHARLES S. LENSTON,F WORCESTER, MASSACHUSETTS, ASSIGNOR TO HOBBS MANU- d FACTUBING COMPANY,0F WORCESTER,MASSACHUSETTS, A CORPORATION 0F MAS- sAcHUsETTs SCORINGWHEEL Application filed September 16, 1927. Serial No. 220,004.

This invention relates to a rotary scorer for use in connection with aroll for creasing, slitting, or scoring lcard-board or other material ofa similar kind and to the means for supporting it. This is animprovement over my application filed November 8, 1926, Serial Theprincipal objects of the invention are to rovide a mounting for thescorer in which si e play is practically impossible; to provide abearing therefor which is accessible from the side; and to provide animproved scorer for creasing purposes.

Other objects and advantages of 'the invention will appear hereinafter.

Reference is to be had to the accompanyingdrawings in which Fig. 1 is aside view of the supporting means for the creasing or scoring wheel;Fig. 2 is a sectional view of the same on the line 2 2 of Fi 1;

Fig. 3 is a simi ar sectional view on enlarged scale; and

Fig. 4 is a central sectional View of a modified support for the scorer.

The scorer bar 10 and scoring roll 11 are of the usual construction wellunderstood in this art. The bar is provided with a dovetailed projection12 extending longitudinally and the body of the scorer support 13 issecured on this dove-tail extension at any place along the bar by meansof a gib 14 and holding screw 15. This xes this body in position and itwill be understood that as many of these are placed along the bartransversely as may be desired to produce the required number ofcreases, grooves, slits or rows of indentations in the card-board Cwhich constitutes the Work.

The support 13 is provided with a longitudinal passage or opening at thebottom eX- tendin upwardly and with side recesses 36 extending up to thecenter of the scorer 16 itself. Inside the longitudinal slot in thebottom of the support 13 are two plates 19 which constitute the scorerholder and have a sliding lit between the cheeks constituting theopposite sides of the passage in the support 13 for preventing side plaIt is to'be understood that these two p ates 19, with the scorer betweenthem and the parts at the center thereof are pivoted on a pin 18. Thisholder is moved up in the opening of the support 13 about the pivot andfastened. On account of the fitting of the plates 19 against the cheeks,the scorer can have no side play.

The holder 19, consisting of these two plates, is perforated at thecenter to receive a bolt 21 passing through it. The head of the bolt onone end and the nut on the screw at the other are located in the siderecesses 36 which extend all the Way through the cheeks of the support13 where the bolt and nut can be reached from the outside.

The scorer 16 is supported by a ball bearing on this bolt. The innerrace 2O of the ball bearingis wider than the outer race 20a. It isforced, by the tightening up of the nut 22, against the inner sides ofthe two plates 19,

constituting the holder, and ,fastened thereto.

On account of the outer race 20 being narroWer than the scorer and thanthe inner race, free rotation of the scorer is provided Vwithout anypossibility of clamping or of jamming the outer race. The outer race ofcourse fits tightly and positively in the bore of the circular scorer16.

The scorer itself, as shown in Figs. 2 and 3, is a circular creasingwheel. It is provided around-its circumference with slanting surfaces 33and 34, preferably made at about 300 to the plane of the scorer. Theseconical surfaces are not allowed to intersect each other, but the scoreris turned off to a substantially cylindrical surface 35 intersectingboth, thus forming a scoring surface having two oblique angles at theends of a cylindrical surface. This scorer is shown in these figures asformed with two of these formations or circular scoring ribs.

In operation these are applied to the cardboard and form two creases ata certain distance apart, which is calculated according to the characterof the material to be operated upon, so that these two creases permit ofbending' the card-board to form a right angled corner and and reduce theliability of the card-board cracking anywhere along the corner. i

In the form shown in Fig. 4:, I have illustrated an offset Wheel forscoring and slitting in Which the construct-ion is substantially thesame as above described, except that the scorer is located at one sideof the holder 123a instead of in the center. In this case this holder ismodified by having its opening on one side instead of through the centerand the only holder is a single plate 19a. The scorer 16 is also offsetwith its edge at one Side but the holding bolt 2l,V its nut Q2 andtheballbearing are the same and apportioned in the same Way to get the sameresults. The members 16 and 16L are for scoring. commonly called scoringcutters.

From this it will be seen that the scorer is so mounted astoavoid-:friction inthe operation both at its bearing and sides andthat, `when,

itis held in position inthe bladesupport, it isincapahle of Wabbhng orside motion and of rubbing against the sides to introduce an',vlriction. The specific forni of creasing scorer isalso a .feature ofimportance in this invention.

Although l have illustrated vand described onljY two forms of theinvent-ion,-I am aware of thelfact-that other modifications-can beinadetherein by any-person skilled in the art Without departing from-thescope of the invention as expressed in the claims.

Therefore, l do notwvish'to be limited ,to all the details ofconstruction herein shoWnand described, but ivhatlr do claim is:

l.. ln al supporting device for a circular scorer, the combination With`a support having r '.infopening providing opposite cheeks, aholderarranged to iitagainst the inner sides ofthe opposite cheeks', 'a;ball bearinghaving an .inner race justfitting-in the holdernnd anVouter race narrower-thantheinner race, and a circular yscorer fixedto-said outer race.

2. In v4a supporting device for .-a circular scorer, the combinationWith a support having annopeningvr extending upfrom the bottom providingopposite cheeks, a holder comprising tivoplatesarranged toitffagainstthel inner sides of the opposite cheeks, a ball-bearinghaving aninner race ust fittingfbetween said two plates in the holderand an outer race narroivei'.- vthan -the inner race so as to be adaptedto rotate WithoutA friction 'between Y thetivo plates, and a circularscorer lixed to said outer race.

3.V In a 4ball bearingsupporbfor a circular scorer, the combination ofa-holder, ball .bearing having an inner race abutting atfboth endsagainst the holder and provided with an outer race thinner than theinner race to prevent rubbingand friction, and a circular scoreriiXed tothe outerrace, the outer race being narrower than the scorer.

el. In a ball bearing support for a circular scoreigthe combination of aboltand nut, a holder -through Which-fthe boltv passes and against whichthe nut is adapted to be tightofrened, a ball bearing having an innerrace They are of the type opening extending up fromfthe'.bottmln,-r` ofaholder fitting again'stthe-oppositevallslof said opening, a boltextending` through-"the holder, said support having recesses on itsopposite sides for receiving the bolt head and its nut in accessible*`position, a ball bearing on lthf bolt, vand ,a rotary .scorer ,carriedby. ;the

Intest-ianony whereoffjhave hereunto affixed my, signature.

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